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Coherent-state quantum key distribution without random basis switching

Weedbrook, C; Lance, Andrew; Bowen, Warwick P; Symul, Thomas; Ralph, Timothy Cameron; Lam, Ping Koy


The random switching of measurement bases is commonly assumed to be a necessary step of quantum key distribution protocols. In this paper we present a no-switching protocol and show that switching is not required for coherent-state continuous-variable quantum key distribution. Further, this protocol achieves higher information rates and a simpler experimental setup compared to previous protocols that rely on switching. We propose an optimal eavesdropping attack against this protocol, assuming...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Physical Review A: Atomic, Molecular and Optical Physics
DOI: 10.1103/PhysRevA.73.022316


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